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nexedi
cython
Commits
c221cf3e
Commit
c221cf3e
authored
Jun 14, 2017
by
Robert Bradshaw
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Introduce safety check for unpickling.
parent
6053339c
Changes
1
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1 changed file
with
10 additions
and
3 deletions
+10
-3
Cython/Compiler/ParseTreeTransforms.py
Cython/Compiler/ParseTreeTransforms.py
+10
-3
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Cython/Compiler/ParseTreeTransforms.py
View file @
c221cf3e
...
@@ -7,6 +7,7 @@ cython.declare(PyrexTypes=object, Naming=object, ExprNodes=object, Nodes=object,
...
@@ -7,6 +7,7 @@ cython.declare(PyrexTypes=object, Naming=object, ExprNodes=object, Nodes=object,
error
=
object
,
warning
=
object
,
copy
=
object
,
_unicode
=
object
)
error
=
object
,
warning
=
object
,
copy
=
object
,
_unicode
=
object
)
import
copy
import
copy
import
hashlib
from
.
import
PyrexTypes
from
.
import
PyrexTypes
from
.
import
Naming
from
.
import
Naming
...
@@ -1610,10 +1611,14 @@ if VALUE is not None:
...
@@ -1610,10 +1611,14 @@ if VALUE is not None:
else
:
else
:
all_members_names
=
sorted
([
e
.
name
for
e
in
all_members
])
all_members_names
=
sorted
([
e
.
name
for
e
in
all_members
])
checksum
=
'0x%s'
%
hashlib
.
md5
(
' '
.
join
(
all_members_names
).
encode
(
'utf-8'
)).
hexdigest
()[:
7
]
unpickle_func_name
=
'__pyx_unpickle_%s'
%
node
.
class_name
unpickle_func_name
=
'__pyx_unpickle_%s'
%
node
.
class_name
unpickle_func
=
TreeFragment
(
u"""
unpickle_func
=
TreeFragment
(
u"""
def %(unpickle_func_name)s(__pyx_type, __pyx_state, %(args)s):
def %(unpickle_func_name)s(__pyx_type, long __pyx_checksum, __pyx_state, %(args)s):
if __pyx_checksum != %(checksum)s:
from pickle import PickleError
raise PickleError("Incompatible checksums (%%s vs %(checksum)s = (%(members)s))" %% __pyx_checksum)
cdef %(class_name)s result
cdef %(class_name)s result
result = %(class_name)s.__new__(__pyx_type)
result = %(class_name)s.__new__(__pyx_type)
%(assignments)s
%(assignments)s
...
@@ -1627,6 +1632,8 @@ if VALUE is not None:
...
@@ -1627,6 +1632,8 @@ if VALUE is not None:
return result
return result
"""
%
{
"""
%
{
'unpickle_func_name'
:
unpickle_func_name
,
'unpickle_func_name'
:
unpickle_func_name
,
'checksum'
:
checksum
,
'members'
:
', '
.
join
(
all_members_names
),
'class_name'
:
node
.
class_name
,
'class_name'
:
node
.
class_name
,
'assignments'
:
'; '
.
join
(
'result.%s = __pyx_arg_%s'
%
(
v
,
v
)
for
v
in
all_members_names
),
'assignments'
:
'; '
.
join
(
'result.%s = __pyx_arg_%s'
%
(
v
,
v
)
for
v
in
all_members_names
),
'args'
:
','
.
join
(
'__pyx_arg_%s'
%
v
for
v
in
all_members_names
),
'args'
:
','
.
join
(
'__pyx_arg_%s'
%
v
for
v
in
all_members_names
),
...
@@ -1643,8 +1650,8 @@ if VALUE is not None:
...
@@ -1643,8 +1650,8 @@ if VALUE is not None:
state = self.__dict__
state = self.__dict__
else:
else:
state = None
state = None
return %s, (type(self), state, %s)
return %s, (type(self),
%s,
state, %s)
"""
%
(
unpickle_func_name
,
', '
.
join
(
'self.%s'
%
v
for
v
in
all_members_names
)),
"""
%
(
unpickle_func_name
,
checksum
,
', '
.
join
(
'self.%s'
%
v
for
v
in
all_members_names
)),
level
=
'c_class'
,
pipeline
=
[
NormalizeTree
(
None
)]).
substitute
({})
level
=
'c_class'
,
pipeline
=
[
NormalizeTree
(
None
)]).
substitute
({})
pickle_func
.
analyse_declarations
(
node
.
scope
)
pickle_func
.
analyse_declarations
(
node
.
scope
)
self
.
visit
(
pickle_func
)
self
.
visit
(
pickle_func
)
...
...
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